Guide
Lexile vs. DRA vs. Guided Reading — comparing reading-level systems
7 min read
US schools use at least three reading-level systems — Lexile, DRA, and Fountas-Pinnell Guided Reading. They measure different things, scale differently, and don't translate cleanly. Here's how to read each and convert between them.
If your child’s school report came home with letters, numbers, and a 40-point scale all describing “reading level,” you’re not confused — they really are three different systems. Most US districts use at least two of them, and they don’t translate cleanly.
What each one measures
Lexile measures the text. A computer scores every published book on two variables — sentence length and word frequency — and outputs a single number from about 200L (early chapter book) to 1500L (academic prose). The scale is continuous; the assumption is that a reader at level X can decode most text at level X with 75% comprehension.
DRA(Developmental Reading Assessment) measures the reader. A teacher sits with a child, listens to them read a leveled passage aloud, records every miscue, asks comprehension questions, and times the read. The output is a single level from 1 (kindergarten emergent) to 80 (8th grade). DRA picks up fluency, intonation, and meaning-making — things a static number can’t.
Guided Reading(Fountas & Pinnell letter levels) measures the match between reader and text for small-group instruction. The 26-letter A-Z scale (with K ≠ kindergarten — letter K is roughly mid-elementary) is built from ten text characteristics: sentence complexity, vocabulary, themes, illustrations, predictability, and so on. Teachers use it to assign books to reading groups so everyone in the group is challenged equally.
A rough conversion chart
No conversion is exact — the systems measure overlapping but different things. Use this as a sanity check when your child’s school sends home a level in one system and you want to estimate the equivalent in another:
| Grade band | Lexile | DRA | Guided Reading |
|---|---|---|---|
| K | BR–100L | 1–4 | A–C |
| 1 | 100L–390L | 6–18 | D–I |
| 2 | 350L–530L | 20–28 | J–M |
| 3 | 520L–820L | 30–40 | N–P |
| 4 | 740L–940L | 40–50 | Q–S |
| 5 | 830L–1010L | 50 | T–V |
| 6–8 | 925L–1185L | 60–80 | W–Z |
Compiled from Scholastic’s widely-cited conversion table, MetaMetrics’ Lexile alignments, and Fountas & Pinnell Continuum of Literacy Learning. State DOEs publish their own bands that may differ ±100L or one DRA level.
When each system is the right answer
- Looking up the difficulty of a specific book? Lexile. Every published book is in MetaMetrics’ database.
- Diagnosing where a struggling reader is stuck? DRA or another running-record assessment. A teacher actually watches the reading; nothing replaces that.
- Choosing books for daily small-group instruction? Guided Reading levels. They’re designed for exactly this job.
- Comparing a child’s growth year-over-year? Use the same system both years. Cross-system comparison introduces noise.
Common mistakes
Treating the conversion chart as exact.If your child’s DRA is 38 and a book is Lexile 600L, that’s a reasonable match — but DRA 38 ↔ 590L↔620L is the realistic range, and the band varies ±50L per state DOE.
Optimizing for the number instead of the reading. A child who reads 30 pages of an “easy” book happily is doing more for their reading than one who slogs through 5 pages of a Lexile-matched book and stops.
Confusing Guided Reading letter K with kindergarten. Letter K is mid-3rd grade reading. The letters don’t map to grade letters; they’re an independent A-Z scale.
Every book page on this site shows the Lexile when available and lists the assigned grades from district reading lists. For DRA and Guided Reading, your school’s assessment record or your child’s teacher is the canonical source — those are clinician-assessed, not algorithmically derived.
Common questions
- Are Lexile, DRA, and Guided Reading the same thing?
- No. Lexile is a single number (200L-1500L) based on sentence length and word frequency. DRA is a teacher-administered assessment scored 1-80 that also measures fluency and comprehension. Guided Reading uses letter levels (A-Z) tied to text features like sentence structure and predictability.
- How do I convert DRA to Lexile?
- There's no exact formula because they measure overlapping but different things. As a rough guide: DRA 18 ≈ Lexile 200L (early 2nd grade); DRA 28 ≈ Lexile 400L (mid-2nd grade); DRA 40 ≈ Lexile 600L (mid-3rd grade); DRA 50 ≈ Lexile 800L (mid-4th grade). Use the conversion as a sanity check, not a precise translation.
- Why do schools use three different systems?
- Each measures something different. Lexile is fast and book-centric — every book gets a number. DRA captures reading behaviors (fluency, miscues, retelling) that a number can't. Guided Reading levels feed into small-group instruction. Districts often use one for screening, another for placement, and a third for daily instruction.
- Which system is most accurate?
- DRA and similar one-on-one running records produce the richest individual data because a teacher observes the child reading. Lexile is the most consistent across books and most useful for picking what to read next. Guided Reading levels are the most useful for grouping students. Each is best at one job.
- What level should a 3rd grader be?
- Year-end targets: Lexile 520L-820L; DRA 38-40; Guided Reading N-P. State standards publish exact bands, but these are the widely-cited common ranges. Below the band = needs support; well above = ready for harder texts but still benefits from grade-level comprehension work.